Carbureter.



C. T. SCHOEN. CARBURETER.

ArPLIoATIoN FILED 1.111.111.1914.

1 107 849. Patented Aug.18,1914. Z SHEETS-SHEET L /Nl/ ENTUR Patented Aug. 18, 1914.

2 SHEETS-SHEET 2.

NVNTOR CHARLES T. SCHOEN, OF MEDIA., PENNSYLVANIA.

CARBURETER.

Bpecloatton of Letter: Patent.

Patton ted A ug. 18, 1914.

Application tiled January 13, 1914. Serial No. 811,833.

To all whom. it may con-cem:

ie it known that l', Cnaamcs T. Sortons, a citizen of the United States, residing at Media, in the county of Delaware an'd State of l xunsylvania, have invented a certain new and usefui Improvement in Carbureters. of which the following is a full, clear, and exact description.

This invention relates to carbureters, p articularly such as may be used in connection with the motors of motor vehicles, and the. like, and the objects of the invention are to produce a carbureter at a low cost, and to simplify the construction so as not only to effect un economy in the first cost, but also to avoid the complication of adjustments to get a maximum of efficiency and economy m consumption of fuel.

The invention consists of a carburetor having a float chamber composed of a body and u cover therefor, preferably made of metal pressed into shape and fitted to ether in any suitable way, and a mixing ciamber also composed of a body and a cover likewise preferably made of metal pressed into shape, the oat chamber and the mixing chamber being united by a Venturi tube, and these parts provided with the necessary valves to regulate the admission of fuel and air, as I will proceed now more particularly to explain and finally claim. l

In the accompanying drawings illustrating the invention, 1n the several figures of which like parts are similarly designated, Figure 1 is a to plan view and Fig. 2 is 'a vertical longitu inal section of the complete carburcter. Fig. 3 is a erspcctive v iew of the constituent parts of t ie mixing chamber. Fie. 4 is aperspective. view of the constituent parts of the fioatchamber. 4

The numeral I indicates the body portion of the float chamber, of substantially the contour illustrated i-n Fig. 4, and'provided with a Acover 2 having an edge flange 3 fitted innuy suitable fluid-tight. manner .to thel bodv portion. A

4 is thcbodyportion of tbe mixing chumber, of substantially the contour shown in Fig" 3, and 5 in the covcr for the mixing.

chamber body portion having a ange 6' by .to hold it in adjusted position.

which it is fitted in-any suitable fiuidtight manner to the body portion 4. 'lhc mixing chamber is arranged above the cover of thc float. chamber and the four parts su fur dcscribed of the float chamber und the mixing chamber are provided with openings which are brought into alincment and in these openings is arranged the Venturi tube 7. As shown more in detail in F ig. 2, the body portion 4 of the mixing chamber has a raised portion 8 surrounding its opening Sl, and on this raised portion rests a flange lt'l on thc lfcnturi tnbc. 'lhc openings l1 and 12 iu thc covers of tbc. mixing chamber and thc float chamber, respectively, are overlapped .by another flange 13 on the Venturi tube,

und thcenlurt tube is provided with a screwtlneadcd shoulder 14 to which is applied thenut 15 screwed up against the inner side of tho cover 2. Near its bottom the Venturi tube. is provided with a third flange 16 which overlaps the opening l? in the bottom of the body portion of the float chamber, and the bottom 18 of the Venturi tube is externally screwthreaded to receive a nut 19 which is screwed up against the bottom of tbe bod-y porion 1, thereby not only securing tbe Venturi tube in place but also serving to rigidly unite` the component parts of the float chamber and the. mixing chamber. 'lhc Venturi tube communicates with thc float chamber through u passage 20, and this pas- 'sa-re communicates with a spray nozzle 2l in which is arranged a needle valve 22 supported in a spider 23 cmssin the Venturi tube, und this vulve has un inc ined bead 9.4 engaged by a. lifting spring 25 on one sido .and an adjusting screw 2G on the other side,

which adiusting screw serves to adjust the needle valve 22, und consequently re ulate the quantity of li uid passing througi the apmy nozzle 21. his inclined head may be of any suitable constructiomand it is 1ere shown as having merely an angular or inclined slot 'ot'.nicl'c. This adjusting screw :26

v may have a knurled head 27 cngagedbv any suitable detent, such as a spring 28, This ad {uatmg screw 26 may bo mounted in a ushmg or hub .29 suitably fixed .in the end l fr.

of the bod of the mixing chamber. The Venturi tu is provided with any suitable number of lateral openings 30 in open communication with the mixing chamber, so as to admit'thereto the fluid from the float rluiniber.

The upper portion of the Venturi tube is providecLwith u throttle valve 31 to which may be applied any suitable operating means such as a tlirottde lever 32. The lower part of the Venturi tube is provided with an elbow 33 secured` thereon by any suitable means, such as a clamping screw/'34. In this elbow is mounted n throttlev valve 35, which `is provided withany suitable operating means, such as a throttle lever 36.

87 is the float, here shown asof annular form, and made of pressed metal parts suitably united, and having connected therewith a oat lever 38 mounted u on a suitable bearin which is seated in a plug 41 a plied to the ttom of the float chamber body in any suitable way, and connected in any suitable vmy with a source of fluid supply.A I prefer to interpoaV a-connecting piece 42 between the valve sexit41 and the source of supply, und in it arrange a foramioiis cylinder or strainer 43 to intercept any foreign matter that may be in the duid, and this strainer is nioun in a nut 44 in such way as to be 'easily removable when necessary. The valve 40 hasgstem 45 arranged in a plug 46 screwthreaded in a bushing 47 suitably mountedl in the flanged opening 48 in the cover 2. Proper tension is placed upon the valve 40 by means of a coiled spring 49 interposed between it and its plu'g 46, and the plug 46 may be adjusted in its bushing in order to correct the tension of the spring 49. These last described valve. parts are preferably inclosedby a cap 50 applied to the bushing 47 und cover 2.- i

51 isa pet cock for draining the fioat chamber.

52 is a. tube extending laterally from the,

body of the float chamber and provided with a nozzle 53`to serve as an auxiliary duid su i ly to the mixing chamber.

he cover of the mixing chamber has a flanged opening 54 for the admission of air and an auxiliary supply of fuel as just described, nnd this opening is covered by a ported disk valve 55, the openings in 'which ure covered by an auxiliary disk valve 56, and these valves arc mounted upon a stem 57, the valve 55 being rigid on the stem and the valve 56 having a slight vertical play thereon to open und close the ports in the valve 55, said valve 56 being normally held in place by a coiled spring 58 to normally close the ports in the valve 55. This valve stein 57 has an extension 59 projecting down 39 and connected wit a valve 40.

into the nozle 53, and a other extension 60 extending up throu h a plu 61 adjustablyfitted in a tube 62 xed in t c raised open ing 63 in the body of the mixing chamber, the adjustment of the plug 61 being fixed by the jam nut 64. Between the plug 61 and. the collar 65 on the stem 57 is a coiled spring 66 which acts upon the' valve 55 to seat it, and the tension of this spring 66 may be regulated by adjusting the nut 61 more or less inthe tube 62.

It will be understood that the needle valve 22 is used in low speed to regulate the quantity of fluid which may bel drawn through the nozzle 21 when the engine is in motion, and that .the lift of this needle from 'its seat in the nozzle is re lated b the screw 26 acting u on the inc ined hea 24.

It wil also be understood that the valve 56 is free to lift upon compression of the spring 58 to thereby admit air through the ports in the valve 55. As the vacuum increases by the increased sucti'bn of the en gine, the valve 55 is lifted, compressing the ring se. 1

The tlirottle' is used for clcTsTng o3 the air to increase the suction on the nozzle 21 for the easy starting of the motor.

Otherwise. than as herein described, the carburetor o rates in the usual manner for controllin t e supply of motive fluid'to the motor an the mixin of auchV supply with the' proper guantity o air.

. The mixing chamber and the dost chan ber 'may be provided with any suitable ei'l:v pedients for reventing the turning 'of the mixing cham r on the Boat chamber, such as the indentations 67.

While it is preferred to roducs the body and cover parts of the oat and mixing' chambers by pressing them from sheet or plate metal, such as steel, it is to be under. stood that the invention is not limited to any mode of roduction.

hat I claim is:-

1. In a carbnreter, the combination of a oat chamber and a mixing chamber, each composed of abody portion and a cover, the said body portions and covers provided with alined openings, a Venturi tube fitted in said openings and provided with flanges overla ping said openings, and nuts applied to th; Venturi tube beneath the body portion of the float chamber and the two covers.

2. In n. carburetor, the combination of a float chamber and a mixing chamber, each composed of a body portion and a cover, the said body portions and covers provided with alined openings, a Venturi tube fitted in sind openings and provided with flanges overlapping said openings and semwthreaded portions next to the o nin in the covers and the opening in t e bog; portion lili IBG

"sie

of the oat chamber, and nuts applied to such screwthreaded portions beneath the rovers and the said body portion.

2%. in u carburetor, o floot chamber, and a superposed mixing chamber, euch chamber haring u body portion und n tianged cover portion of pressed metal, the mixing chamni-r cover having :i tiunged uirinlet` combined with n- Venturi tube extending through In testimony whereof I have hereunto set my hand this twelfth day of January, A. D. 1914.

W CHARLES T. SCHOEN.

itnesses:

J. S. Woon, C. S. JoxmsoN.

Copies o! this patent may be obtained for in cents auch, by tddreuinl the "Commissioner of Potenn.

Wnhington, D. 0. 

